A high-strung, eccentric lemon-headed ruler created by Princess Bubblegum. He is known for his shrill voice, extreme temper, and his infamous catchphrase, "UNACCEPTABLE!" Lemongrab is socially awkward, prone to outbursts, and struggles with feelings of loneliness and inadequacy. Despite his flaws, he is a complex character who deeply desires order and control in his kingdom, even if his methods are often harsh and unreasonable.